Evidence map›Paper›PMID 18535621›Full record

ArticleCancer gene therapy2008

Chimeric adenoviral vector Ad5/F35-mediated APE1 siRNA enhances sensitivity of human colorectal cancer cells to radiotherapy in vitro and in vivo.

D-B Xiang, Z-T Chen, D Wang, M-X Li, J-Y Xie, Y-S Zhang, Y Qing, Z-P Li, J Xie

Abstract read
PubMed Publisher
In one paragraph

Article in Cancer gene therapy, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.2field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 61 citations in OpenAlex.

  1. Review
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  7. Supramolecular Radiosensitizer Based on Hypoxia-Responsive Macrocycle.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022
    Article
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  17. Human apurinic/apyrimidinic endonuclease 1.Antioxidants & redox signaling · 2014
    Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

D-B XiangCancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, China.
Z-T Chen
D Wang
M-X Li
J-Y Xie
Y-S Zhang
Y Qing
Z-P Li
J Xie
Army Medical University · CNDaping Hospital · CNChildren's Hospital of Chongqing Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Apurinic/apyrimidinic endonuclease (APE1), a bifunctional AP endonuclease/redox factor, is important in DNA repair and redox signaling, may be associated with radioresistance. Here we investigate whether targeted inhibition of APE1 can sensitize tumor cells to irradiation in vitro and in vivo. We first constructed chimeric adenoviral vector Ad5/F35 carrying human APE1 siRNA (Ad5/F35-APE1 siRNA). The infectivity of chimeric Ad5/F35 to LOVO colon cancer cells was greater than that of Ad5. APE1 was strongly expressed and nuclear factor kappaB (NF-kappaB), a downstream molecule of APE1, known as a radioresistance factor, was constitutively active in LOVO cells. Infection of LOVO cells with Ad5/F35-APE1 siRNA resulted in a dose-dependent decrease of APE1 protein and AP endonuclease activity in vitro. Ad5/F35-APE1 siRNA significantly enhanced sensitivity of LOVO cells to irradiation in clonogenic survival assays, associated with increased cell apoptosis. The APE1 expression in LOVO cells was induced by irradiation in a dose-dependent manner, accompanied with the enhancement of DNA-binding activity of NF-kappaB and Ad5/F35-APE1 siRNA effectively inhibited constitutive and irradiation-induced APE1 expression and NF-kappaB activation. In a subcutaneous nude mouse colon cancer model, Ad5/F35-APE1 siRNA (5 x 10(8) IU, intratumoral injection) inhibited the expression of APE1 protein in LOVO xenografts, and significantly enhanced inhibition of tumor growth by irradiation. In conclusion, APE1 may be involved as one of the radioresistance factors, and targeted inhibition of APE1 shows an effective means of enhancing tumor sensitivity to radiotherapy.

Indexed as

AdenoviridaeAnimalsApoptosisBlotting, WesternCell Line, TumorColorectal NeoplasmsCombined Modality TherapyDNA-(Apurinic or Apyrimidinic Site) LyaseDose-Response Relationship, RadiationElectrophoretic Mobility Shift AssayFemaleFlow CytometryGenetic TherapyGenetic VectorsHumansMiceAPEX1 protein, humanDNA-(Apurinic or Apyrimidinic Site) LyaseRNA, Small Interfering

Identifiers

PMID18535621
OpenAlexW2089456258

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.